RE: O.S 1.60FX Owners. Post your tach readings

RE: O.S 1.60FX Owners. Post your tach readings
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RE: O.S 1.60FX Owners. Post your tach readings - 5/14/2008 10:45:52 PM

Super08

Posts: 380
Joined: 12/17/2007
From: Fort McMurray, AB, CANADA
Status: offline

15% XP Fuel
Top FLight 18x8 power point
Bisson Pitts
1400 ft
70 degrees
Only 5 tanks of fuel through engine
Max 7500rpm
Fly at 7300rpm
1750rpm idle

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If I buy one more engine it''s going to hurt more than my wallet if my wife gets ahold of it.......

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Post #: 326

RE: O.S 1.60FX Owners. Post your tach readings - 5/15/2008 1:03:59 AM

rcgood

Posts: 51
Joined: 4/28/2007
From: , OR, USA
Status: offline

Those Topflite props spin about 1000 rmps less then the same size APC. I don't get it as they are a lot lighter. I tried an 18x6 on my OS 160 and that was the case (as opposed to APC 18x6W) and the power was considerably less.

(in reply to Super08)

Post #: 327

RE: O.S 1.60FX Owners. Post your tach readings - 5/15/2008 7:45:25 PM

Super08

Posts: 380
Joined: 12/17/2007
From: Fort McMurray, AB, CANADA
Status: offline

I was back out at the field flying today and have a gallon run through it now. Much stronger and I leaned out the low end quite a bit. The idle is rock solid, I can let it idle for a few minutes and come back and hit the throttle and it takes right off. I have the idle set at 1,800. I am very impressed with how well this engine is running. Here are my new numbers with the same stats as in my above post...

Xoar Sword 18x8........8,000 rpm (pulls like a mule with this prop)

TF Powerpoint 18x8........7,810 rpm

< Message edited by Super08 -- 5/15/2008 9:06:49 PM >

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If I buy one more engine it''s going to hurt more than my wallet if my wife gets ahold of it.......

(in reply to rcgood)

Post #: 328

RE: O.S 1.60FX Owners. Post your tach readings - 5/15/2008 9:04:16 PM

rcgood

Posts: 51
Joined: 4/28/2007
From: , OR, USA
Status: offline

22 x 8 ??? WOW that's a huge prop. Is that a mistype? Did you by any chance get to measure the thrust? I'm looking for a good wood prop that pulls hard with this engine and haven't found one yet. I would love to have the power of (or more) an APC 18X6W with the spool up of a wood prop.

(in reply to Super08)

Post #: 329

RE: O.S 1.60FX Owners. Post your tach readings - 5/15/2008 9:06:27 PM

Super08

Posts: 380
Joined: 12/17/2007
From: Fort McMurray, AB, CANADA
Status: offline

LOL I'll fix it. Had my DL-50 in my head or something.....as for good props they are very nice. Seem to be compared to a Vess. Here is their site.

http://www.xoarintl.com/props/ma.html

< Message edited by Super08 -- 5/15/2008 9:10:00 PM >

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If I buy one more engine it''s going to hurt more than my wallet if my wife gets ahold of it.......

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Post #: 330

RE: O.S 1.60FX Owners. Post your tach readings - 5/15/2008 9:24:37 PM

G.P.

Posts: 196
Joined: 9/3/2005
From: Grande Prairie, AB, CANADA
Status: online

That's good, I was about to throw my 1.60 in the garbage after I read the size of prop that yours would swing!

(in reply to Super08)

Post #: 331

RE: O.S 1.60FX Owners. Post your tach readings - 5/18/2008 4:12:10 AM

joshman123

Posts: 66
Joined: 4/28/2007
From: toano, VA, USA
Status: offline

ok 160 fx trouble. i have a 160 with a perry pump.. it has always been a little hard to start (the first time) i have run apx 4 gallons of fuel 12.5% through it. it is mounted on the front of a funtana 90 swinging a 20-6 wood prop. i have run it super rich the whole time i have had it. today it lost power in flight and locked up.? after cooling it is free but somthing is wrong what do i need to replace and is the 20-6 too much prop? it has plenty of cowling cut out to cool it. and looks like the plane has a smoker on it leaving a trail while running.

(in reply to G.P.)

Post #: 332

RE: O.S 1.60FX Owners. Post your tach readings - 5/18/2008 4:16:43 AM

joshman123

Posts: 66
Joined: 4/28/2007
From: toano, VA, USA
Status: offline

test

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Post #: 333

RE: O.S 1.60FX Owners. Post your tach readings - 5/18/2008 11:49:00 AM

Flyer95

Posts: 978
Joined: 9/21/2004
From: STOCKHOLM Akersberga, SWEDEN
Status: offline

Running slightly rich is more than enough because when you installed a Perry VP-30 about 200rpm from peak is good as it will not lean out in flight. OS-F glow plug seems to run great on large glow engines and I would install one of these to be sure. 20x6 is too much prop and will not give you what you need on a Funtana 90, try a APC 18x6w or wooden MenzS 18x6 prop. What fuel are you running in this engine?

(in reply to joshman123)

Post #: 334

RE: O.S 1.60FX Owners. Post your tach readings - 5/18/2008 3:00:51 PM

joshman123

Posts: 66
Joined: 4/28/2007
From: toano, VA, USA
Status: offline

its called s&w 12.5% its a club fuel.i did only run 2 tanks out of a new gallon with two deadsticks

(in reply to Flyer95)

Post #: 335

RE: O.S 1.60FX Owners. Post your tach readings - 5/18/2008 10:28:27 PM

Flyer95

Posts: 978
Joined: 9/21/2004
From: STOCKHOLM Akersberga, SWEDEN
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The nitro content and the fuel is probably good as long as it contains some castor oil in the mix. With the Perry VP-30 the idle needle most be leaned more than with muffler pressure. An OS-F plug with a smaller prop and more leaned mixture and the main needle only about 200rpm from peak should make this engine run great and very reliable.

(in reply to joshman123)

Post #: 336

RE: O.S 1.60FX Owners. Post your tach readings - 5/19/2008 12:27:33 AM

joshman123

Posts: 66
Joined: 4/28/2007
From: toano, VA, USA
Status: offline

it locked up in flight and now will not start motor feels tight is this ring damage? piston sleeve?

(in reply to Flyer95)

Post #: 337

RE: O.S 1.60FX Owners. Post your tach readings - 5/19/2008 3:59:53 AM

Super08

Posts: 380
Joined: 12/17/2007
From: Fort McMurray, AB, CANADA
Status: offline

Sounds like you may have seized the engine or a bearing. Most likely the piston to the sleave. Only way to tell is to take it apart. May have been a combination of to much load (large prop) and or run too lean. I would guess it was running too lean but the deadsticks you had. I find this engine really unloads in the air and needs to be set richer on the ground than other engines I have had. Good luck with what you find, hopefully it won't be too costly.

_____________________________

If I buy one more engine it''s going to hurt more than my wallet if my wife gets ahold of it.......

(in reply to joshman123)

Post #: 338

RE: O.S 1.60FX Owners. Post your tach readings - 6/4/2008 4:05:09 PM

PlaneKrazee

Posts: 3541
Joined: 5/15/2002
From: Westerly, RI, USA
Status: offline

quote:

ORIGINAL: joshman123

ok 160 fx trouble. i have a 160 with a perry pump.. it has always been a little hard to start (the first time) i have run apx 4 gallons of fuel 12.5% through it. it is mounted on the front of a funtana 90 swinging a 20-6 wood prop. i have run it super rich the whole time i have had it. today it lost power in flight and locked up.? after cooling it is free but somthing is wrong what do i need to replace and is the 20-6 too much prop? it has plenty of cowling cut out to cool it. and looks like the plane has a smoker on it leaving a trail while running.

Send it in to hobby services.

Did you tune the engine with a tach? What rpm was it spinning? What brand prop were you running? What muffler were you using? Why are you using a pump? My guess is you were running the engine at less than 7800 rpm and it was over heating.

I ran a Mejzlik 20X6 and APC 19X8 on mine with a large volume muffler for kicks to see if it could do it, however I have a working knowledge of this engine and never flew the engine without extensive ground testing. I recommend an APC 18X6 or APC 18X8 with a large volume tuned muffler.

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(in reply to joshman123)

Post #: 339

RE: O.S 1.60FX Owners. Post your tach readings - 6/4/2008 10:39:18 PM

firestone1121

Posts: 185
Joined: 6/8/2007
From: Shillington, PA, USA
Status: offline

ive had this problem also. me and another rcu member have this engine in our sundowners, and while this bird flies at nearly 130 mph with a 15x12 APC prop and 20-30% nitro, it does overheat after a few high speed passes, and runs VERY